Spike-extractor and jack.



PATENTED JUNE 80, 1908.

I. M. COFFEY. SPIKE BXTR'AGTOR AND JACK.

APPLIOATION FILED SEPT. 13. 1907.

I wemv u A V A ammo; [54(10M6 aflcy,

WWW?) ISAAC M. COFFEY, OF PAYETTE, IDAHO.

SPIKE-EXTRACTOR AND JACK.

Specification of Letters Patent.

Patented June 30, 1908.

Application filed September 13, 1907. Serial No. 392,776.

To all whom it may concern:

Be it known that I, ISAAC M. COFFEY, a citizen of the United States, residing at Payette, in the county of Canyon and State of Idaho, have invented new and useful Improvements in Spike-Extractors and Jacks, of which the followin is a specification.

This invention re ates to an improved spike extractor and jack to be used for extracting railroad spikes; for leveling the track, and for various urposes for which a jack is customarily emp lo ed; and it has for its object to simplify an improve the construction and operation of this class of devices.

With these and other ends in View which will readily appear as the nature of the invention is better understood, the same consists in the improved construction and novel arrangement and combination of parts which will be hereinafter fully described and particularly pointed out in the claims.

In the accompanying drawing has been illustrated a simple and preferred form of the invention; it being, however, understood that no limitation is necessarily made to the precise structural details therein exhibited,

ut that changes, alterations and modifications within the scope of the invention may be resorted to when desired.

In the drawing, Figure 1 is a vertical sectional view of a device constructed in accordance with the invention. Fig. 2 is a front elevation of the same. Fig. 3 is a horizontal sectional view taken on the plane indicated by the line 33 in Fig. 1.

Correspondin arts in the several figures are denoted by Iil e characters of reference.

The improved device comprises a body or barrel 1 in which a lifting bar 2 is fitted for vertical slidin movement; said lifting bar being provide at its up er end with a head 3 and at its lower end Wltfi a bifurcated foot or claw 4 which projects through the slot 5 in the front side of the casing. The latter is provided with a recess 6, in which a pluralit of anti-friction balls are seated, said balls a fording a bearing for the front side of the lifting bar; the recess 6 is accessible through an opening at the upper end of the body or casing for which a cap or closure 8 is rovided, said cap being retained in osition y means of a fastening member suc as set screw 9.

The rear slde of the lifting bar is provided with a lurality of teeth 10 constltuting a rack w ich is engaged by the segmental toothed head 11 or an operating lever 12 which is fulcrumed between lugs or cars 13 that project upon the rear side of the casing, near the upper end of the latter. Said casing is also provided near its upper end with a transverse aperture 14 for the passage of a pin or key 15 which may be inserted through said aperture in engagement with the rack teeth 10 upon the rear side of the lifting bar, which latter may thereby be retained securely in position at various adjustments. The pin 15 is provided with a knob or handle 16 to enable it to be readily grasped and manipulated by the fingers of the operator.

The rear side of the casing is provided with inturned flanges 10, said flanges forming a guide way for the lifting bar 2, thereby preventing t e same from any free lateral movement. Formed on the outer faces of the flanges 10 are ears 13, said ears being formed in alinement with the edges 11 of the flanges 10 and projecting laterally therefrom. Such construction forms a direct guide way for the segmental toothed head 11 for enga ement with the rack bar 2.

The operation and advantages of this invention will be readily understood from the foregoing description taken in connection with the drawings hereto annexed. When the device is used as a spike puller, the bifurcated foot or claw 4 is placed in engagement with the head of the spike that is to be extracted, and the lifting bar is then raised by manipulating the lever 12, thus lifting the spike without bending the latter. Any object that is to be lifted may be placed in engagement with the head or the foot of the ifting bar, which latter may be readily adjusted by means of the lever 12; the antifriction members 7 servin to reduce friction, and consequently to facilitate the operation. The front side of the lifting bar may, if preferred, be provided with a groove 17 to be en aged by the anti-friction members.

avin thus fully described the invention, what is c aimed as new is In a device of the class described, a casing having a recess in its upper end, a detachable closure for said recess, a vertically grooved liftin bar movable therein and having a plum ity of teeth constituting a rack, antiiction balls placed in the recess of the casing in en agement with the bar, the atter bein provided at its up er end with a head an at its lower end Wltfi a bifurcated foot, a pin extending transversely grooved lifting through the casing, said pin engaging the crumed between said ears and adapted to rack teeth upon the lifting bar for retaining en age the rack. 10

the latter in position to which it has been raised, inturned flanges formed on the rear side of the casing for preventing any lateral movement of the lifting bar, ears formed in alinement with the edges of the flanges, a lever having a segmental toothed head fuln testimony whereof I aflix my signature in presence of two Witnesses.

ISAAC M. COFFEY. Witnesses:

JOHN C. GIESLER, WILLIAM ROBINSON. 

